Heel-fcrming attachment for heel-building machines



1. MITCHELL AND 0. PARKS. HEEL FORMING ATTACHMENT FOR HEEL BUlLDlNG MACHINES.

APPLICATION FILED MAR. 26,1921- Patented Jan. MP 1922,

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J. E. MITCHELL AND D. PARKS. HEEL FORMING ATTACHMENT FOR HEEL BUILDING MACHINES.

APPLICATION FILED MAR. 26, I921- Patented Jan.11u ,11922.

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JUHN E. MITCHELL AND DENNIS PARKS, OF ST. LOUIS, IVIISSOURI.

HEEL-FORMING ATTACHMENT FOR HEEL-BUILDING TEACEINES.

Application filed March 26, 1921.

To all whom it may concern:

Be it known that we, JOHN E. Mrrorrnnr and DENNIs PARKs, citizens of the United States, residing in the city of St. Louis and State of Missouri, have invented new and useful Improvements in Heel-Forming Attachments for Heel-l3uilding Machines, of which the following is a specification.

This invention relates to heel-blank building machines of the type involved in our copending application, Serial No. 432,695 filed December 23rd, 1920 and particularly of the type shown in an application for heel-blank building machine, filed by us of even date herewith, Serial Number 156,025.

In both of said applications, heel-blanks are assembled on a slide plate, a separating member is applied and the heel-blank and separator are forced into a log-holder.

The heel-blanks are assembled against a vertically disposed fiat plate projecting upward from the slide plate and the skill of the operator is largely depended upon to secure the correct position or the lifts in the assembled heel-blanks. The separating device used when applied to the heel-blanks has members which engage the rounded side of the heel and tend to force the lifts into and hold them in the correct position while they are in the logholder, but the heel-forming portions of these separating devices do not engage the sides of the heel-blanks and hence it frequently happened that the lifts would be displaced laterally by the operator and no means were provided for adequately correcting this error.

lit is the object of the present invention to provide a tomatically operating means cooperating with the slide plate for truing the heel-blank, that is to say, for forcing the lifts thereof laterally into the correct alignment with each other.

The device illustrated and claimed herein forms a part of the machine or" the said application filed of even date herewith, but is not therein described nor claimed.

in the accompanyim drawings:

Figure 1 is a view in side elevation of a heel-blank building machine having our heel-forming attachment applied thereto;

Figure 2 is a plan view on an enlarged scale showing the slide plate having the heel-forming attachment thereon and showing also a portion of the log-holder, the view illustrating by dotted lines the method 01":

Specification of Letters Patent.

Patented Jan. 16 1922,

Serial No. 456,024.

separating the heel-former from the heelblank prior to the entrance of the latter into the log-holder;

Figure 3 is a view in side elevation of the parts illustrated in Figure 2.

Referring now to the drawings, the numeral 1 indicates the main frame of the machine supported by legs or standards 2 on a base 3 and in its upper portion providing inclined frame members 4. The pulley 5 driven from a belt 6 operates an eccentric rod 7 which in turn operates a throw lever 8, such movement being under the control of the operator and effected by manipulating the foot treadle 9. The operation of the machine is exactly the same as set forth in our said pending application Serial No. 482,695 and need not be described more in detail. The throw lever 8 is pivotally connected at its upper end as shown at 10 to a slide-block 11 provided with an upstanding plate 12 against which the heel-blanks are built up and which, when the throw lever-8 is moved upwardly, or to the right in Figure 1 (to the left in Figures 2 and 3), forces the heel-blanks into the log-holder 18. The slide-block 11 moves over the upper surface of a plate 14L which is preferably an extension of the bottom or breast plate or the log-holder. Projecting from opposite sides of the slide-block 11 are ears 15 apertured to receive bolts 16. The numerals 17 indicate two similar arms each of which is provided on its under side with an extended bearing 18 the said bearing having a continuous aperture extending therethrough through which in each instance, the bolt 16 is passed, the latter serving as a pivot for the arm 17. A nut 18 is applied to the top of each bolt. The head 19 of each bolt is separated some distance from the bottom of the extended bearing 18 and a coil spring 20 is inserted between the head 19 and bottom of bearing 18. One end of this spring is secured in an aperture in the bolt 16 and the other end portion 20 is extended forwardly,

' as shown in Figure 3, and bears against the outer side of a pin 21 projecting downwardly from the bottom of the arm 17. The outer end of each of the arms 17 is apertured to receive a headed bolt 22 which is passed downwardly therethrough and its portion below the arm 17 has a roller 23 mounted thereon which is held in position on such portion of the bolt, by a nut 24, the roller,

however, being free to rotate upon said bolt. Mounted on the upper side of each of the arms 17 are heel-forming members 25, each of said plates being suitably shaped and contoured on its inner side as indicated at 26, to enable it to snugly embrace the side of a heel-blank. The heel-forming members 25 are shown provided with slots 27 through which headed screws 28 pass into screwthreaded engagement with the respective arms 17. By loosening these screws and moving the heel-forming members in one direction or the other, they may be adjusted to adapt them to co-operate with any given size of heel-blank being formed. Mounted on each side of the plate 1a is a cam rail 29 having a flat surfaced portion 30 for holding the heel-formers 25 in normal position, a depressed portion 31 for permitting the heel-formers to engage the sides of the heelblank, an inclined cam surface 32 for separating the heel-formers, and a flat surfaced portion 33 which maintains the heel-formers in their separated relation with respect to the heel-blank as shown by the dotted lines in Figure 2.

In operation the heel-blank indicated by the numeral 3a is built up by the operator on the top of the breast plate 14 between the heel-forming members 25 and against the back plate 12 and when completed, the heelblank will have the relative position shown in Figure 2. In this figure the lifts are shown displaced alternately at opposite sides of the heel-blank to better illustrate the operation of the heel-forming members. IVhen the heel-blank has been assembled the operator presses down on the treadle 9 which causes the machine to be placed in operation and the eccentric rod 7 draws the throw lever 8 upward, moving the slide-block 11 over the plate 14: and toward the log-holder 13. In this movement the rollers 23 slide off of the normal cam surface 30 into the depressions 31 and permit the heel-formers to snap against the sides ofcthe heel-blank under the influence of the spring ends 20 the force of the impact and the pressure of the springs being sufficient to move any misplaced lifts laterally from opposite dlrections into true alinement, as shown at the left side of Figure 2. In the continued movement'of the slide block, the rollers 23 engage and ride upon the cam surfaces 32 thereby separating the heel-formers 25 from the heel-blank 34, and then ride upon the flat surface 33 tohold the heel-formers separated as the heel-blank is forced into the log-holder 13 by the continued movement of the slide block 11 and back plate 12. The heel-forming members 25 do not interfere with the use of the heel-blank separating devices such as shown in the application of Dennis Parks, filed of even date herewith, Serial Number 55,807, the said devices resting upon the top of the heel-blank and the separating plate thereof extending down between the'heel-forming members 25 and against the bottom or outer lift of the heel-blank. These separating devices, as clearly set forth in said application, assist in bringing the lifts into true position and also operate to hold them in such position while in the logholder. When the throw lever returns to the normal position shown in Figure 1, the rollers 23 follow the contour of the cam rails and return to the normal position on the flat surfaces 30, as shown in Figure 2. V

The back plate 12 may be adjusted, as to incline, on the slide block 11 by means of a bolt 35 having a locking nut 36, which bolt passes through a lug 37 projecting upwardly from the slide block 11 and engages the rear side of the back plate 12. A screw, 38, loosely engaging in an aperture in the lower end of said plate permits this adjustment.

We claim 1. In a heel-building machine, in combination with a support on which a heel-blank is adapted to be built up, a log-holder, a mov able member for forcing the built up heelblank into said log-holder, and heel-formers located at opposite sides of said movable member and automatically actuated in the movement thereof to engage opposite sides of said heel-blank and press the lifts into true alinement, and then to be withdrawn from engagement with the heel-blank before the entrance of the latter into the logholder.

2. In a heel-building machine, in combi nation with a support on which a heel-blank is adapted to be built up, a log-holder, a movable member for forcing the built up heel-blank into said log-holder, heel-formers adjustably mounted at opposite sides of said movable member and normally out of engagement with the heel-blank, and means for automatically actuating said heel-formers in the movement of said member to cause said heel-formers to engage opposite sides of the heel-blank and press the lifts into true alinement and then to be withdrawn from engagement with the heel-blank before the entrance of the latter into the log holder.

8. In a heel-building machine, in combination with a support on which a heel-blank is adapted to be built up, cam rails located at opposite sides of said support, a logholder, a movable member for forcing the built up heel-blank into said log-holder, and spring-actuated heel-formers mounted on said member and operatively engaging said cam rails, the contour of said cam rails being such as, in the normal position of the parts, to hold the heel-formers out of engagement with the heel-blank and in the movement of said member toward the logholder to permit said heel-formers to turn into engagement with opposite sides of the heel-blank under the influence of their springs to press the lifts into true alinoment and thereafter to force said heel-formers out of engagement with the heel-blank before the latter enters the log-holder, and to maintain the heel-formers in such position until the return movement of said movable member.

4. In a heel-building machine, in combination with a support on which a heel-blank is adapted to be built up, cam rails located at opposite sides of said support, a logholder, a movable member for forcing the built up heel-blank into said log-holder, heel-formers pivotally mounted on opposite sides of said movable member, a roller carried by each of said heel-formers beyond the point of pivotal mounting on said member and a spring for forcing said roller into engagement with a cam rail, the contour of said cam rails being such as, in the passage of said roller thereover as said member moves toward the log-holder, t0 first permit a movement toward each other of the heel-formers to cause them to engage opposite sides of the heel-blank and force the lifts thereof into true alinement and then to move said heel-formers out of engagement with the heel-blank before the latter enters the log-holder.

5. In heel-building machine, in combination with a log-holder having its bottom or breast plate extended from one end thereof, a slide block movably mounted on the extended end of said breast plate and having a back plate against which heel-blanks are adapted to he built up, means for moving said slide block toward the log-holder to force the built up heel-blank into the latter, cam rails mounted on opposite sides of the extended end of said breast plate, and spring-actuated heel-formers pivotally mounted at opposite sides of said slide block and operatively engaging said cam rails the contour of said cam rails being such as, in the movement of the slide block toward the log-holder to permit the heel-formers to spring into engagement with the heel-blank and force the lifts into true alinement and then to be withdrawn from engagement with the heel-blank before the entrance of the latter into the log-holder.

In testimony wh reof, we have hereunto set our hands.

JG DEB 

